| Item | Ceiling/Roof Backdraft Dampers |
| Type | Roof Mount, Exhaust |
| Damper Size (In.) | 39 x 39 |
| Overall Size (In.) | 41 x 41 |
| Max. Velocity (FPM) | 2,250 fpm |
| Construction Material | Aluminum Blades, G-90 Galvanized Steel Frame, Nylon Bushings and Galvanized Steel Tie Rods., Stainless Steel Pivot Pins |
| Outside Flange (In.) | 41 x 41 |
| Use w/Dayton Ventilators | 4HX89, 4HZ01 |
| Flange Width (In.) | 1 in |
| Includes | Pre-Punched Conduit Hole Knock-Out, Felted Edges for Quiet Operation |
| Overall Width | 41 in |
| Overall Height | 41 in |
| Overall Length | 4 1/2 in |
| Rough Opening Dims | 38 1/2 in x 39.5 in |
| Blade | Aluminum Blade w/ Felt Seal |
| Switch Action | Normally Closed |
| Frame Less Flange | 39 |
| Counterbalanced | Yes |
| For Nominal Duct Diameter | Not Applicable |
| Blade Orientation | Parallel Blades |
| Damper Type | Static |
| Blade Material | Aluminum |
| Rough Opening Diameter | 39 1/2 in |
| Blade Type | Flat Blade |
| Rough Opening Shape | Square |
| Fits Fan Diameter | 36 in |
| Maximum Ambient Temperature | 180 Degrees F |
| Flange Type | Rear Flange |
| Free Area | 8.9 sq ft |
| Frame Material Thickness | 20 ga |
| Number of Panels | 1 |
| Mounting Position | Horizontal |
| For Fuel Type | Not Applicable |
| Maximum Air Velocity | 2250 fpm |
| Airflow Direction | Vertical |
| Flange Width | 1 in |
| ACMA Leakage Class | Not Applicable |
| Rough Opening Width | 39.5 in |
| Blade Seal Material | Felt |
| Pressure Drop @ 1000 fpm (AMCA 5.2) | Not Applicable |
| Fusible Link Temperature | Not Applicable |
| Closure Type | Gravity |
| Seal Material | Not Applicable |
| Single Acting/Double Acting | Single Acting |
| For Duct Shape | Square |
| Frame Material | Galvanized Steel |
| Closure Velocity Rating | 2,250 fpm |
| Frame Depth | 2 in |
| Bushing Material | Nylon |
| Rough Opening Length | 38 1/2 in |
| Maximum Pressure | 1 in wc |
| Damper Application | Backdraft |
| Overall Diameter | Not Applicable |
| Country of Origin (subject to change) | United States |
| Package Quantity | 1 |
Damper, Roof Mount, DAYTON, Mfr# 4HX70
$166,99
-3% / ea
with subscription
Free shipping will be applied on orders over $50
41 In.H-W 4.5 In.L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 41 in, Rough Opening Diameter 39 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 36 in, For Duct Shape Square, Free Area 8.9 sq ft, Overall Width 41 in, Frame Material Thickness 20 ga, Overall Length 4 1/2 in, Frame Depth 2 in, Rough Opening Length 38 1/2 in
9999 in stock
Must order in multiples of 1
Subtotal:
$166.99
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